The
name GAS TURBINE means exactly what it says. A turbine type engine
that is operated by gas rather than one operated,
for instance, by steam or water. The gas which operates the turbine is
the product of the combustion that take place when a suitable fuel is
mixed and burned
with the air passing through the engine. |
Background |
Leonado Da Vinci
Da Vinci described the chimney jack, as the hot air from the fire rose,
it was made to pass through a series of fan blades and through a series
of gears, turn a
roasting. |
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Sir Isaac Newton
Sir Isaac Newton formulated the laws of MOTION on which all devices
utilizing the jet propulsion theory are based.
The vehicle illustrated in the picture below , called Newton's wagon ,
applied the principle of jet propulsion . It is though that Jacob
Gravesand , a
Dutchman , actually designed this " horseless carriage", and that Isaac
Newton may have only supplied the idea. The wagon consisted of a
large boiler mounted on four wheels. Steam generated by fire built
below the boiler was allowed to escape through a nozzle facing
rearward. The
speed of vehicle was controlled by a steam cock located in the nozzle. |
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HISTORY |
England Sir Frank Whittle :Whittle
is considered by many to be the father of the jet engine.
In 1930 Frank Whittle submitted his patent application for a jet
aircraft engine. |
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The first Whittle engine was called the Power Jet W.1, after its
manufacturere. It flew in the British Gloster G.40 on May 15, 1941 with
W 1 Whittle engine installed. |
Germany | |
VON OHAIN
At the same time, von Ohain in Germany had been at work on the
development of a jet engine for aircraft.
He built and ran his first demonstration engine in 1937. His first
flight engine was the HES 3B which used on HE178 and flew on August
27,1939.
The Whittle and the von Ohain engines led to successful jet-powered
fighter aircraft by the end of World War II , the Messerschmitt Me262
that was used by German Air Force.
It might be note that the early English production jet engine used
centrifugal compressor where as the production engine in Germany
employed the more advanced axial flow
compressor. |
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America | |
America
was a late-comer to the jet-propulsion field and with the help of
British Government , the General Electric Corporation was awarded the
contract to built W.1 an American Version.
The first jet engine airplane in America was made in October 1942, in
Bell XP-59A . The two General Electric I-A engines used in this
airplane, the I-A engine was rated at about 1300 lb of thrust.
In late 1941 , NAVY awarded the contract to Westinghouse . Westinghouse
engineers designed an engine with an axial compressor and an anular
combustion chamber. Shortly thereafter,
several other companies began to design and produce gas turbine
engines. |